<!DOCTYPE html>
<html lang="zh">
	<head>
		<meta charset="utf-8">
		<link rel="stylesheet" href="style.css">
		<title>100 绿色邮筒口动态输入框</title>	
	</head>
	<body>
		<div class="app">
			<label class="label100">
				<input type="text" class="inp100" placeholder="邮筒投递口" required />
			</label>
		</div>
	</body>
</html>